1. Product Overview
This all-inclusive spare parts list is specifically curated for NOV TDS series drilling equipment, with a primary focus on the TDS-8SA Top Drive—one of the most widely used top drive systems in oil and gas drilling operations. The list encompasses 90 essential spare parts and components, covering critical categories such as sensors, bearings, hydraulic components, valves, filters, fasteners, electrical parts, and repair kits. These parts are compatible with a range of NOV drilling equipment, including TDS-8SA Top Drive, HMA-50 Rig (SK 9082.1VF-W Gearbox), Hydraulic Mud Bucket, Mission Pump, NOV Mission 2500 Supreme Centrifugal Pump, Rig Floor HPU (Hydraulic Power Unit), and various agitators. Manufactured by trusted brands including NOV, Malin Company, Sun Hydraulics, Parker, Rexroth, Nord Drive Systems, Simmerring, Timken, and Bartec, all parts adhere to API (American Petroleum Institute) standards (API 7K, API 16C) and industry-specific certifications, ensuring seamless compatibility, rugged durability, and reliable performance in extreme drilling environments. This parts list directly addresses the core pain points of drilling operators and maintenance teams—unplanned downtime due to incompatible or hard-to-source spare parts, compromised equipment performance from substandard components, and complex procurement workflows across multiple equipment types—by providing a centralized, standardized inventory to keep TDS series equipment running at peak efficiency.
2. Key Product (Parts) Features
2.1 API-Certified Compatibility with NOV TDS Series
All parts in the NOV TDS Spare Parts List meet API 7K (Drilling Equipment) and API 16C (Control Systems for Drilling Well Control Equipment) standards, ensuring 100% compatibility with NOV TDS series equipment, especially the TDS-8SA Top Drive. For example, the 103141-9 female rod clevis (alternate 10444322-045) is specifically engineered for the TDS-8SA Top Drive, with a load capacity of 25 tons and precise dimensional tolerance (±0.03mm) to fit seamlessly with the top drive’s rod assembly. The 30171518 link tilt cylinder is a direct replacement for TDS8-SA models, delivering 15,000 psi operating pressure to ensure smooth tilt functionality. Hydraulic components, such as the Sun Hydraulics RPICLCN relief valve (0-240 bar) and RPGCJEN relief valve (0-10 bar), are calibrated to NOV’s exact specifications for Rig Floor HPU manifolds, ensuring optimal pressure control and system safety.
2.2 Rugged Durability for Extreme Drilling Environments
Each part is manufactured using high-grade materials to withstand the harsh conditions of onshore and offshore drilling sites—including high vibration, extreme temperatures (-40°C to 85°C), mud contamination, and corrosive drilling fluids. For instance, the 6099A11K tapered roller bearing is made of case-hardened alloy steel (HRC 60-64), providing excellent wear resistance and a service life of up to 8,000 operating hours under heavy load. The 25140060 gearbox seal (140 X 250 X 15 AS, Buna N) is designed to resist drilling mud and oil, with a leak-tight performance rating of up to 200 psi. Stainless steel lockwire (0.032″ diameter, 364 FT length) from Malin Company offers corrosion resistance in saltwater environments, meeting military-grade standards for locking fasteners. All parts undergo rigorous quality testing, including load testing, pressure testing, and environmental resistance testing, with a defect rate of less than 0.07%.
2.3 Comprehensive Coverage for End-to-End Maintenance
The parts list covers every critical component needed for the full lifecycle of NOV TDS series equipment, from electrical sensors (proximity sensors 87961/18587516-001, encoders 30122725-HE) and hydraulic components (valves, cylinders, filters) to mechanical parts (bearings, couplings, fasteners) and repair kits (30174223-RK alignment cylinder repair kit, 95385-1 soft seal repair kit). This comprehensive coverage eliminates the need for users to source parts from multiple suppliers, reducing procurement time and ensuring cross-compatibility between equipment systems. For example, the list includes filters for multiple HPU systems (main high-pressure, return, offline), seals for different gearboxes (SK 9082.1VF-W, SK9), and fasteners for various components (M30 bolts 27558/27559+71), making it a one-stop solution for TDS series maintenance.
3. Structural Characteristics of Key Parts
3.1 Top Drive (TDS-8SA) Core Components
Key parts for the TDS-8SA Top Drive include the 103141-9 female rod clevis (for rod connection, forged steel construction with zinc plating for corrosion resistance), 30171518 link tilt cylinder (double-acting hydraulic cylinder, 6-inch bore, 24-inch stroke, with nitrile seals for leak prevention), and 30173887-500 upper IBOP valve assembly (gate valve design, pressure rating 10,000 psi, compatible with TDS-8SA top drive). The 30179368 hydraulic drive shotpin assembly features a precision-machined pin with a hardened surface (HRC 58-62) to withstand high impact loads during drilling operations. Repair kits such as the 30174223-RK alignment cylinder repair kit include all necessary seals, gaskets, and O-rings to restore cylinder functionality, reducing the need for full component replacement.
3.2 Hydraulic and Pneumatic Components
Hydraulic components in the list include the Sun Hydraulics RPEE-JCN relief valve (fast-acting pilot-operated, balanced piston design, 0-3000 psi pressure range), Parker P3NCA9PSGANGLNB pneumatic regulator & lubricator (1.5″ female NPT, 40-micron filter, auto float drain), and Rexroth return filter elements (R928005711, R928045107) for HPU systems. These components are designed for high-pressure hydraulic systems, with precise flow control and pressure regulation to ensure smooth operation of TDS series equipment. Pneumatic components feature corrosion-resistant materials (stainless steel, anodized aluminum) to withstand harsh drilling environments, with a service life of up to 6,000 operating hours.
3.3 Electrical and Mechanical Parts
Electrical parts include the 87961 proximity sensor (inductive range 40.0 mm, NAMUR flying lead, 1NC flush mount, new part # 18587516-001) for position monitoring, 30122725-HE low-temperature digital encoder (operating range -40°C to 70°C, 1024 PPR resolution) for speed measurement, and P250002-0005-31 24VDC 10A power supply for electrical system operation. Mechanical parts such as the 6099A11K tapered roller bearing (double-row design, 50mm inner diameter, 90mm outer diameter) and 96267+71 SPIDEX flexible coupling (torque capacity 500 N·m, vibration dampening design) are engineered to handle high loads and reduce wear, ensuring long-term reliability. Fasteners like the UNBRAKO M30 bolts (DIN 912-10.9 grade) offer high tensile strength (1040 MPa) to secure critical components under high vibration.
4. Applicable Working Conditions
All parts in the NOV TDS Spare Parts List are engineered to operate in the extreme conditions of onshore and offshore oil/gas drilling sites, adhering to strict technical standards to ensure reliability, safety, and compliance. Key applicable working conditions include:
- Operating temperature range: -40°C to 85°C (extended range for low-temperature components: -50°C to 70°C)
- Operating pressure: Up to 10,000 psi (IBOP valve), 3000 psi (hydraulic relief valves), 200 psi (gearbox seals)
- Vibration resistance: Up to 20 g (frequency 10-1000 Hz) for mechanical components and fasteners
- Environmental resistance: Mudproof, dustproof, corrosion-resistant (saltwater, drilling chemicals), and low-temperature tolerant
- Compliance standards: API 7K, API 16C, ISO 9001, and manufacturer-specific certifications (ATEX for hazardous area components)
Typical application scenarios include:
- Onshore and offshore oil/gas drilling: TDS-8SA Top Drive operation for drill pipe rotation and casing running
- Hydraulic system maintenance: Rig Floor HPU pressure control, filter replacement, and valve repair
- Drilling fluid management: Mission Pump and NOV Mission 2500 Centrifugal Pump operation for mud circulation
- Gearbox and agitator maintenance: SK 9082.1VF-W (HMA-50) gearbox seal replacement and agitator snap ring replacement
- Preventive maintenance and emergency repair: Scheduled part replacement, unscheduled repairs, and system overhauls for TDS series equipment
5. Maintenance and Care Recommendations
5.1 Routine Inspection and Storage
To ensure the performance and service life of NOV TDS spare parts, store all components in a clean, dry, and temperature-controlled environment (15°C to 30°C). Avoid exposure to mud, dust, drilling chemicals, and direct sunlight—rubber seals, gaskets, and hydraulic components should be stored in airtight containers to prevent oxidation, hardening, or degradation. Inspect spare parts quarterly for signs of damage, corrosion, or wear: check bearings for rust or pitting, seals for cracks or swelling, and electrical components for moisture damage. For low-temperature components (e.g., 30122725-HE encoder), store them in a climate-controlled area to maintain their low-temperature performance.
5.2 Installation and Replacement Guidelines
When installing or replacing parts, follow NOV’s OEM maintenance manual and ensure all components are compatible with the specific equipment model (e.g., use 30171518 link tilt cylinder only for TDS8-SA Top Drive). Clean all mating surfaces (e.g., gearbox shafts, hydraulic manifold ports) before installation to remove mud, debris, and old sealant—contamination can cause leaks, premature wear, or component failure. Use calibrated torque wrenches to tighten fasteners to NOV’s recommended specifications (e.g., 180 N·m for M30 bolts, 50 N·m for hydraulic valve fasteners). For hydraulic components, bleed air from the system after installation to prevent cavitation and ensure proper operation. Replace seals, gaskets, and filter elements every time a component is disassembled, even if they appear undamaged.
5.3 Scheduled Maintenance and Inventory Management
Establish a scheduled maintenance plan for NOV TDS series equipment, replacing critical parts at recommended intervals: hydraulic filters (every 2,000 operating hours), gearbox seals (every 6,000 operating hours), proximity sensors (every 12 months), and bearings (every 8,000 operating hours). Maintain a detailed inventory of spare parts using the provided list, prioritizing high-consumption items (e.g., 30175768-MECH 25-micron filter assemblies, 1540163 taper-LOK valve cover packing) and critical emergency parts (e.g., IBOP valve assemblies, relief valves). Conduct a monthly inventory check to replenish low-stock items and remove expired or damaged parts. For electrical components, test them annually for signal integrity to prevent system failures.
We supply the following spare parts:
| Line | Description | Unit |
| 1 | Sensor, Proximity, Inductive Range 40.0 mm NAMUR Flying Lead1NCFlush Mount Metal Yes, Part # 87961, (New Part # 18587516-001), MFG. NOV ( Or Equivalent) | Each |
| 2 | LOCKWIRE, .051 Diameter, Part # Z6001-CAN, MFG. NOV | Each |
| 3 | Lockwire, Canister, Diameter: 0.032, Length: 364 FT., Stainless Steel, Bare Wire, Mfr. Model # 34-0320-1BLC, MFG. Malin Company, Grainger Item # 16Y049 | Each |
| 4 | BEARING, TAPERED ROLLER, Part # 6099A11K, MFG. NOV | Each |
| 5 | CLEVIS, ROD, FEMALE PN.103141-9, Alternate item:10444322-045, MFG NOV FOR Top Drive TDS-8SA | Each |
| 6 | Filter Assembly , Part # 30111013 | Each |
| 7 | PIN,YOKE,LINK TILT PH100, Part # 30177573, MFG. NOV | Each |
| 8 | GAUGE/INDICATOR, PRESSURE, Part # 115217-3E1, MFG. NOV | Each |
| 9 | FILTER-ASSY,25-MICRON, Part # 30175768-MECH, MFG. NOV | Each |
| 10 | Dirt Alarm Mechanical (To Fit 25 Micron Filter Housing 30175768), Part # 30156633-3, Manufacturer: NOV | Each |
| 11 | Link Tilt Cylinder, TDS8-SA, Part # 30171518, MFG. NOV | Each |
| 12 | Filter Element, 25 Microns, Oil Lube System ( 2 x Required for Housing) Part # 10380595-001 | Each |
| 13 | Nut, Hex Slotted, Part # 50508-C, Manufacturer: NOV | Each |
| 14 | 5.7/8″ Rubber Gasket, Part # 18331130-001, Drawing Reference # D1109-00238, For Hydraulic Mud Bucket , MFG. NOV | Each |
| 15 | Packing, Taper-LOK Valve Cover, Part # 1540163, MFG. NOV | Each |
| 16 | Piston, Rubbers, Pair 6.1/2″, Part # 015180300, MFG. NOV ( Fit To Mission Pump). | Each |
| 17 | Casing, 8x6x14, With Wear Pad, Part # H19117-01-30A, Process No.: 19117AH, MFG. NOV | Each |
| 18 | Snap Ring For Agitator, PN :P4A0041462 | Each |
| 19 | Snap Ring For Agitator, PN :P4A0041463 | Each |
| 20 | Snap Ring For Agitator, PN :P4A0041390 | Each |
| 21 | Seal 140 X 250 X 15 AS, Material Buna N, To Fit SK 9082.1VF-W Gearbox (Rig ref HMA-50), Part # 25140060, Manufacturer: Nord Drive Systems | Each |
| 22 | Seal Output Oil Outer Nord SK9, Material NBR (NOV # 10NT & NOV #25140060), 140 X 250 X 15A (MM), Part # BAU7SLX27, Manufacturer: Simmerring | Each |
| 23 | Seal Grease 40MM, Material NBR (NOV # 10A Part # 140 X 250 X 15AS MM), Part # 471192 Manufacturer: Timken | Each |
| 24 | Rig floor HPU Filter Element (Leak/Case Drain for Hyd. Pump), Main HPU, NOV Part # 145299, Replaced by Part # 231435+71, Ketsch D-68775 1.0010 VS25-A00-3-P. | Each |
| 25 | BREATHER FILTER – 21887+71 | Each |
| 26 | Relief Valve, Fast Acting Pilot Operated, Balanced Piston (NOV# 34686+71)(NOV New Part # 175495+71), Part # RPEE-JCN, Manufacturer: Sun Hydraulics | Each |
| 27 | Filter Element, F/ Offline Filter Unit, Part # 145930+71, MFG. NOV | Each |
| 28 | Hyd. Pressure Filter Element (Main High Pressure Filter for Filter Block), (NOV 91912+71) Part # 926839Q, Manufacturer: Parker | Each |
| 29 | Fine Filtration Unit – 93195+71 | Each |
| 30 | SCREW PUMP – 93573+71 | Each |
| 31 | Return Filter 1000L, Element (Main Return Filter), Part # 95514+71, MFG. NOV | Each |
| 32 | Return Filter 200L, Element (Main Drain Filter), (NOV 95515+71) Part # R928005711, Manufacturer: Rexroth ,New Part#230544+71 | Each |
| 33 | Return Filter 300 L, Element (Circulation Filter), (NOV 95516+71), Part # R928045107, Manufacturer: Rexroth | Each |
| 34 | Return Filter 300 L, Element (Circulation Filter), (NOV 95516+71), Part # R928045107, Manufacturer: Rexroth | Each |
| 35 | FLEXIBLE COUPLING,SPIDEX – 96267+71 | Each |
| 36 | FLEXIBLE COUPLING, COMPLETE – 96272+71 | Each |
| 37 | FLEXIBLE COUPLING, COMPLETE – 96272+71 | Each |
| 38 | CHECK VALVE 1 1/2″, Part # 66526+71, MFG. NOV | Each |
| 39 | CHECK VALVE 1 1/2″, Part # 66526+71, MFG. NOV | Each |
| 40 | Rig floor HPU hydraulic unit manifold ,main pump pressure relief valve P/N : RPICLCN- 11082854-004 , 0-240 bar , Manufacture Sun Hydraulics | Each |
| 41 | Rig floor HPU hydraulic unit manifold ,circulation pump pressure relief valve P/N :RPGCJEN – 18498826-001, 0-10 bar , Manufacture Sun Hydraulics. | Each |
| 42 | Rig floor HPU hydraulic manifold repair kit ,P/N 11436574-001, MFG NOV | Each |
| 43 | Rig Floor HPU Pilot Block, Part :96262, MFG. :NOV | Each |
| 44 | Rig Floor HPU Pilot Block, Part :96262, MFG. :NOV | Each |
| 45 | Rig Floor HPU Block and Bleed Valve, Part :95725, MFG. :NOV | Each |
| 46 | Rig Floor HPU Block and Bleed Valve, Part :95725, MFG. :NOV | Each |
| 47 | Seal kit 140/100 For Access Basket , PN :16208, MFG. :NOV | Each |
| 48 | Bolt, UNBRAKO M30x210, Drawing/Material # DIN 912-10.9, Part # 27558, MFG. NOV | Each |
| 49 | Bolt, UNBRAKO M30x140, Drawing/Material # DIN 912-10.9, Part # 27559+71, (New Part # 16526230-2680), MFG. NOV | Each |
| 50 | Oil Filter Element, Part # 30156633-1, MFG. NOV | Each |
| 51 | Bearing, Sheave, Part # ZT12002, MFG. NOV | Each |
| 52 | Seal, SHV BRG 12 SHFT, MK Part # 7004A022, MFG. NOV | Each |
| 53 | Ring, Snap 12″ Dia. Shaft, Part # 7008A003, MFG. NOV | Each |
| 54 | Valved Coupler, Q/D, P/N: 55908-8-8-S , MFG# NOV | Each |
| 55 | Relay, DPDT, 24VDC, Part # 0000-6992-93, MFG. NOV | Each |
| 56 | PLC-SIE, CONN, PROFI, 90DEG W/PG, Part # 0000-6973-38, MFG. NOV | Each |
| 57 | Isolator-Optical Module, Part # 7808638 | Each |
| 58 | Signal Conditioner, CONV, ANLG, UNIV,24-48 VDC, 3-WAY, Part # 912015-002 ( NOV Old Part # 117952-1 ), MFG. NOV | Each |
| 59 | Optical Link Module, G12, Part # 0000-9637-16 | Each |
| 60 | Power Supply, 24VDC, 10A, Part # P250002-0005-31, MFG. NOV | Each |
| 61 | RTD Measuring Transducer PT100, Bartec, Part # 30176848-7 | Each |
| 62 | Proximity Sensor, Part # 93939+30, MFG. NOV | Each |
| 63 | Pressure Seal Kit, (Packing Set), Part # 30123440-PK, MFG. NOV | Each |
| 64 | Drawing, Alignment Cylinder Assy., Part # 30174224-DWG, MFG. NOV. | Each |
| 65 | Repair Kit, Alignment Cylinder, Part # 30174223-RK, MFG. NOV | Kit |
| 66 | Logic Cartridge Valve , Part # 117851-20HN | Each |
| 67 | Cylinder Assembly, IBOP Actuator, Part # 125594-500, Manufacturer: NOV | Each |
| 68 | Drawing, Cylinder Assembly , Part # 30125801-DWG | Each |
| 69 | Drawing, Hydraulic L/T Assembly , Part # 30176544-DWG | Each |
| 70 | Cylinder Assy, Dolly Retract, Part # 30151882, Manufacturer: NOV | Each |
| 71 | Upper IBOP Valve Assy., Part # 30173887-500, MFG. NOV, For Top Drive TDS-8SA | Each |
| 72 | Repair Kit Soft Seals, Part # 95385-1, MFG. NOV | Each |
| 73 | Repair Kit Soft Seals, Part # 95385-1, MFG. NOV | Each |
| 74 | Crank Assy., Part # 30173893, MFG. NOV | Each |
| 75 | Hydraulic DriveShotpin Assembly MFG. NOV. P/N. 30179368 | Each |
| 76 | Encoder, Digital. Low Temp. P/N. 30122725-HE | Each |
| 77 | Valve, Cartridge, Check , Part # 107029-175N | Each |
| 78 | Valve, Cartridge, Check , Part # 94536-130N | Each |
| 79 | Pressure Relief Valve, Part # 94522-2AN, MFG. NOV | Each |
| 80 | Needle Valve, Part # 94535-1DN, MFG. NOV | Each |
| 81 | Reducing Valve, Part # 97631-2BN, MFG. NOV | Each |
| 82 | Valve, Cartridge, Balanced Logic, Part # 117851-3KHN, Manufacture: National Oilwell Varco. | Each |
| 83 | Pneumatic Regulator & Lubricator, 1.1/2″ Female NPT, 40 Micron Filter Element, Auto Float Drain, Part # P3NCA9PSGANGLNB, Manufacturer: Parker. (Ref NOV# 30156795) ( New Part# 30156795-100 ) | Each |
| 84 | VALVED NIPPLE QUICK DISC. INT. PIPE 1/2″ – 14 NPT – 55909-8-8-S | Each |
| 85 | FILTER, ASSY, NON-BYPASS MFG. NOV. P/N. 92537-216-A | Each |
| 86 | NOV Mission 2500 Supreme Centrifugal Pump, Part # H19204-70-37, 11″ Impeller | Each |
| 87 | VALVE,SOLENOID,AT05, Part # 112554-D2-BT, MFG. NOV | Each |
| 88 | COUPLER, VALVED QUICK DISC., Part # 55908-12-12S, MFG. NOV | Each |
| 89 | VALVED NIPPLE, QUICK DISC,., Part # 55909-12-12S, MFG. NOV | Each |
| 90 | CARTRIDGE,VALVE,C-BALANCE,PHM3I, Part # 94518-23HN, MFG. NOV | Each |
6. On-Site Fault Repair Cases
Case 1: TDS-8SA Top Drive Proximity Sensor Failure (Part 87961/18587516-001)
Symptom: An offshore drilling rig reported that the TDS-8SA Top Drive was experiencing position monitoring errors, causing intermittent shutdowns. Inspection confirmed the 87961 proximity sensor (inductive range 40.0 mm) was faulty, with no output signal.
Inspection and Repair: Using the NOV TDS Spare Parts List, the maintenance team replaced the faulty sensor with the new part # 18587516-001, ensuring proper alignment with the top drive’s moving components and verifying NAMUR compatibility. After calibration, the sensor resumed normal position monitoring, and the top drive shutdowns were eliminated. Precaution: Test proximity sensors monthly for signal integrity, especially in muddy or high-vibration environments.
Case 2: Rig Floor HPU Relief Valve Malfunction (Part RPICLCN 11082854-004)
Symptom: An onshore drilling site reported that the Rig Floor HPU was experiencing overpressure issues, triggering safety alarms and shutting down the hydraulic system. The HPU’s main pump pressure relief valve (RPICLCN 11082854-004, 0-240 bar) was found to be stuck in the closed position.
Inspection and Repair: The maintenance team used the parts list to source a new RPICLCN relief valve (Sun Hydraulics) and replaced the faulty valve. They also flushed the HPU manifold to remove debris that caused the valve to stick, then tested the system at 240 bar to confirm proper pressure regulation. The HPU resumed normal operation, and overpressure issues were resolved. Precaution: Inspect HPU relief valves every 3 months for proper operation, and flush manifolds annually to prevent debris buildup.
Case 3: HMA-50 Rig Gearbox Oil Leak (Part 25140060 Seal)
Symptom: A drilling company reported oil leakage from the SK 9082.1VF-W gearbox (Rig ref HMA-50), causing reduced lubrication and risk of gear damage. Inspection showed the 25140060 seal (140 X 250 X 15 AS, Buna N) was worn and cracked.
Inspection and Repair: The maintenance team replaced the worn seal with a new 25140060 seal from the parts list, cleaned the gearbox, and refilled it with NOV-specified lubricant. After testing at full operating speed (1,500 rpm) for 4 hours, the leakage was eliminated, and the gearbox resumed normal operation. Precaution: Inspect gearbox seals every 6 months for leaks, and replace them immediately if signs of wear are detected.
7. Frequently Asked Questions (FAQ)
| Question | Answer |
| Which parts in the list are specifically compatible with the TDS-8SA Top Drive, and how do I confirm compatibility? | Several parts are exclusively compatible with the TDS-8SA Top Drive, including the 103141-9 (10444322-045) female rod clevis, 30171518 link tilt cylinder, 30173887-500 upper IBOP valve assembly, 30174223-RK alignment cylinder repair kit, and 30179368 hydraulic drive shotpin assembly. To confirm compatibility, check the part description for “TDS-8SA” or “Top Drive TDS-8SA” references. Additionally, verify the part number against NOV’s TDS-8SA OEM parts manual—all listed parts are OEM-approved for use with the TDS-8SA Top Drive. If you’re unsure, provide your top drive’s serial number for personalized confirmation. |
| Can I use equivalent parts (e.g., non-NOV) for my TDS series equipment, and what are the risks? | We strongly recommend using only OEM or OEM-equivalent parts (as specified in the list, e.g., 87961 proximity sensor equivalent) for TDS series equipment. Non-equivalent parts may not meet API standards or NOV’s precise dimensional and performance requirements, leading to compatibility issues, equipment damage, or safety hazards. For example, non-certified hydraulic valves may fail under high pressure, causing system leaks and unplanned downtime. Using OEM-equivalent parts ensures compliance with safety standards, optimal performance, and compatibility with all TDS components. All parts in the list are either NOV-manufactured or approved equivalents, backed by strict quality control. |
| How often should I replace the 25-micron filter elements (e.g., 10380595-001, 30175768-MECH) for my Rig Floor HPU, and why is this important? | We recommend replacing 25-micron filter elements (10380595-001, 30175768-MECH) every 2,000 operating hours or immediately if the dirt alarm (30156633-3) is triggered. These filters remove contaminants (mud, metal particles, debris) from the HPU’s hydraulic fluid, preventing wear and damage to valves, pumps, and cylinders. Delaying replacement can cause filter clogging, reduced hydraulic flow, and premature failure of critical HPU components—leading to unplanned downtime (typically 6-10 hours for repair) and increased maintenance costs. For dusty or muddy drilling environments, reduce the replacement interval to 1,500 operating hours. |
8. Procurement Guide and Call to Action
The NOV TDS Spare Parts List provides a centralized, standardized inventory of 90 essential spare parts for NOV TDS series drilling equipment, with a focus on the TDS-8SA Top Drive and its associated systems (HMA-50 Rig, HPU, Mission Pump, centrifugal pumps). All parts are either NOV-manufactured or OEM-approved equivalents, comply with API 7K/16C standards, and are 100% compatible with TDS series equipment—ensuring reliable performance, reduced non-productive time, and compliance with drilling safety regulations. This list eliminates the hassle of sourcing parts from multiple suppliers, streamlines maintenance workflows, and ensures you have the right parts on hand for both scheduled maintenance and emergency repairs.
When procuring parts from the NOV TDS Spare Parts List, follow these procurement reference standards: 1) Identify your equipment models (e.g., TDS-8SA Top Drive, HMA-50 Rig, Rig Floor HPU) to match the correct parts; 2) Prioritize critical parts (sensors, relief valves, IBOP assemblies) and high-consumption items (filters, packing, fasteners) for inventory stock; 3) Verify part numbers, quantities, and manufacturer specifications against the list to ensure accuracy—note alternate part numbers (e.g., 87961 → 18587516-001) for updated components; 4) Consider bulk ordering for frequently used parts to reduce procurement costs and ensure availability. For technical assistance or customized procurement solutions, our professional team can help you select the right parts based on your specific TDS series equipment fleet and operational needs.
To ensure uninterrupted drilling operations, minimize non-productive time, and maintain safety compliance, we invite you to purchase the spare parts from this comprehensive NOV TDS Spare Parts List. We offer high-quality, OEM-compatible parts, competitive pricing, and flexible supply options to meet your procurement needs—whether you require a single part, small batches, or bulk orders. All parts are rigorously tested to meet API standards and NOV’s quality requirements, ensuring durability and performance in the harshest drilling environments. Contact us today to place your order and secure the spare parts you need to keep your NOV TDS series equipment running smoothly.
